package com.example.demo.customer;

import com.example.demo.exception.NotFoundException;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Component;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.PathVariable;

import java.util.List;
import java.util.Objects;

@Service

public class CustomerService {

    private final CustomerRepository customerRepository;


    @Autowired
    public CustomerService(CustomerRepository customerRepository){
        this.customerRepository = customerRepository;
    }

    List<Customer> getCustomers() {
        return customerRepository.findAll();
    }

    Customer getCustomer(Long id) {

            return  customerRepository


                    .findById(id)
                    .orElseThrow(()  -> new NotFoundException("customer"+id+" 无法找到"));
        }

    }

